Build number LRX21V.N900AUCUE0C1 has only just started rolling out, so you may not see the update notification just yet. Over the next few days the update should hit your phone, but if you want to check for an update now you can easily. To check for an update, open your devices settings menu go to the 'General' tab, then scroll to system update and tap on update now.

Futurology 1.1: Smaller, higher-capacity batteries are closer than ever before

Recent advancements in Lithium Sulfur and Lithium metal anodes pave the way for smaller, safer batteries with higher capacities.

Back at the start of the year in our Smartphone Futurology series, we discussed the technology behind the battery in smartphones and what's to come in the future. This article is a quick update to that piece, looking at some of the recent developments in batteries based on Lithium chemistry — like the ones powering the vast majority of smartphones.

We'll take a closer look at what reduces your phone's battery life over time, and how high-capacity technologies like Lithium Sulfur batteries and Lithium metal anodes are closer than ever to becoming practical. Join us after the break.

U.S. Cellular to start selling LG G Flex 2 on March 26 for $150 on contract

U.S. Cellular will begin selling the LG G Flex 2 starting on Thursday, March 26 for the price of $149.99 with a new two-year agreement.

The wireless carrier will also offer LG's latest phone, with its curved display, for $0 down and 20 monthly payments of $31.50 a month. There's also the option of buying it outright for $630. U.S. Cellular will offer the 5.5-inch phone with its Platinum Silver color only.

About the Android Auto compatibility check website ...

The online tool that is supposed to tell you if your phone will work with Android Auto is decidedly not working.

Android Auto works with Android 5.x devices. But if you're really not sure whether your phone is compatible, there's a tool at android.com/auto/check that'll tell you if you're good to go.

Unfortunately, it's broken. It's reporting back that the Nexus 6, Moto X 2014, HTC One M9 and HTC One M8 are not compatible with Android Auto. But we've used every single one of those phones with Android Auto. (And we're testing more as time permits.) So for now, don't rely on that check page. We'll update when it's fixed.

HTC One M9 pre-orders kick off at Three UK, available on plans starting from £39

The HTC One M9 is now available for pre-order at Three UK, with eligible plans starting from £39 a month. Coupled with an upfront fee of £19 for the new smartphone, it's a premium price for the advanced HTC device.

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